1. Speed ​​regulation We already know that the axial flow pump is working at a certai ......
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Application No. / Patent No.: 200520031367 The utility model belongs to the field of locks, in par ......
Compared with other vegetables, the sweet pepper roots are underdeveloped and the root regenera ......
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From the "white-browed heroes" to the new head of the "Hitou Six Group IV" sho ......